c++循环、continue、排序、goto以及猜数字小游戏

 打印*

#include<iostream>
using namespace std;
#include<string.h>
int main(){
	for(int i=1;i<=9;i++){
		for(int j=1;j<i;j++){
			cout<<j<<"*"<<i<<"="<<j*i<<" ";
		}
		cout<<endl;
	}
	
	system("pause");
}

 continue用法

#include<iostream>
using namespace std;
#include<string.h>
int main(){
	for(int i=0;i<=100;i++){
		if(i%2==0){
			continue;
		}
		cout<<i<<endl;
	}
	
	system("pause");
}

 排序

#include<iostream>
using namespace std;
int main(){
	int arr[9]={4,2,8,0,5,7,1,3,9};
	cout<<"排序前："<<endl;
	for (int i=0;i<9;i++){
		cout<<arr[i]<<" ";
	}
	cout<<endl;
	for(int i=0;i<9-1;i++){
		for(int j=0;j<9-i-1;j++){
			if(arr[j]>arr[j+1]){
				int temp=arr[j];
				arr[j]=arr[j+1];
				arr[j+1]=temp;
			}
		}
	}
	for (int i=0;i<9;i++){
			cout<<arr[i]<<" ";
		}
	
	
	
		system("pause");
	
	
}

 猜数字

#include<iostream>
using namespace std;
#include<ctime>
int main(){
srand((unsigned int)time(NULL));
int num=rand()%100+1;
int val=0;
while(1){
	cin>>val;
	if(val>num)cout<<"猜测过大"<<endl;
	else if(val<num)cout<<"猜测过小"<<endl;
	else{
		cout<<"恭喜您猜对了"<<endl;
		break; 
	} 
	
	
	
	
}










		system("pause");	
}

 goto用法

#include<iostream>
using namespace std;
int main(){
	cout<<"1、xxxx"<<endl;
	cout<<"2、xxxx"<<endl;
	goto FLAG;
	cout<<"3、xxxx"<<endl;
	cout<<"4、xxxx"<<endl;
	FLAG:
		cout<<"5、xxxx"<<endl;
		system("pause");
	
	
}